Question

A person who is 6 feet tall casts a three-foot-long shadow .A nearby Pine Tree casts 15 long Shadow what is the height h of the pine tree

Answer 1

6/2=3
15 x 2= 30 ft tall

Answer 2

ratio and proprtion

actualheight:rhadow=6:3=2:1
real height is 2 times shadow

if tree shadow is 15, then real height is 2 times of that, or 15*2=30

ratio and proprtiona way
6/3=x/15
90/3=x
30=x

height is 30ft